What is the way to specify in hosts that all subdomains should address a specific ip?

Question

ubuntu

There is a site that periodically creates subdomains for cities, and each time you have to register in hosts 127.0.0.1 city.domain.com city2.domin.com I tried
.domain.com and *.domain.com. But without success.

Answer 1

if you have a real domain, write a normal dns for it (if there is no hosting, then at the registrar or on Yandex) and set up an A-record there

@ IN A 127.0.0.1
* IN A 127.0.0.1

Answer 2

there is no such way.